Rowlock.



L.ROTHGERY. ROWLOGK.

APPLICATION FILED MAY 8, 1911.

1,001), 1 98. Patented Augs, 1911.

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LEOPOLD ROTI-IGERY, OF DETROIT, MICHIGAN.

ROWLOCK.

Specification of Letters Patent.

Patented Aug. 8, 1911.

Application filed May 8, 1911. Serial No. 625,786.

To all whom it may concern:

Be it known that I, LEOPOLD ROTHGERY, a citizen of the United States, residing at Detroit, county of Vayne, State of Michigan, have invented a certain new and useful Improvement in Rowlocks, and declare the following to be a full, clear, and exact de scription of the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying drawings, which form a partof this specification.

This invention relates to row locks.

It has for its object an improved row lock, furnishing the universal motion which is necessary to accomplish a rowing oscillation and the feathering movement which accompanies the return stroke of the oar.

In the drawings :Figure 1, is an elevation across the axis of the oar. Fig. 2, is an elevation along the axis of the oar. Fig. 3, is a cross section of a simple structure row lock. Fig. 4, is a cross section of a structure of row lock in which ball bearings are introduced.

The row lock consists of the thole 1, to the upper end of which is pivoted a hand ring 2, in which there is rotatably held a two-part ring 3, 4, which is secured to the oar loom by pins or small nails that engage through holes 5. The two-part ring 3, 4, is screwed together, the part 3 being threaded internally and the part 4 being provided with a reduced neck that is threaded externally and engages with the interior threads of the part 3. The end of the part 3 abuts against a rib 6 that extends inward at the middle inner surface of the band ring 2; the

part 4 is provided with a neck band 7 that engages across the inner band of the rib 6 and with a shoulder 8 that engages against the side of the rib 6, forming in the assembled ring a groove midway between the ends of the ring and adapted to engage closely against the sides and inner surface of the rib 6 and allow the ring to turn freely, but prevent it from moving endwise with respect to the band ring.

In the form shown in Fig. 4 the rib 6 is removed and a groove is cut in the band ring, and a groove is cut in the assembled loom ring, the two grooves forming in the assembled structure a race for balls 9. In either structure the loom of the oar and the loom ring secured to it turn readily for feathering purposes. The band ring and the loom ring held to it oscillate on the pivot 10 to allow for the rise and dip of the oar and the entire row lock turns in the thole holder.

What I claim is z- In a rowlock, in combination with a thole, a band ring pivotally secured thereto, a loom ring made in two parts adapted to engage through said band ring, the said two parts in their assembled condition being provided with a circumferential groove adapted to engage a holding member projecting inward from the band ring, substantially as described.

In testimony whereof, I sign this specification in the presence of two witnesses.

LEOPOLD ROTHGERY.

Witnesses:

STUART C. BARNES, VERA PILLMAN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

